Fig. 3

Both ¹⁸F-OC and ⁶⁸Ga-DOTATATE had lesions that could not be detected by another imaging agent. PET/CT images acquired with ⁶⁸Ga-DOTATATE and ¹⁸F-OC for patient No. 19 (a, b) and No. 20 (c, d). The ¹⁸F-OC fusion image (b) found an increased uptake in a retroperitoneal lymph node, while the uptake of this lymph node was not significantly increased on ⁶⁸Ga-DOTATATE (a) image. However, in another patient, the ¹⁸F-OC fusion image (d) shows that the uptake in one retroperitoneal lesion was not obvious, while the uptake of ⁶⁸Ga-DOTATAE was significant (c)